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5 Cross-Platform Mobile Development Tools You Should Try

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As mobile OSes — especially iPhone and Android — wax and wane, the pressing question remains: How do you choose which mobile devices to develop for and which devices to omit from your roadmap?

Cross-OS platforms for mobile development on the whole are not yet a completely perfect, have-your-cake-and-eat-it-too solution, but many of them offer an excellent alternative to ignoring one mobile OS in favor of another or, perhaps worse, burning serious resources to develop for two or three platforms at once.

Here are a few cross-platform development tools that were recommended to us by sources we trust. If you know of others or if you have any helpful tips about the frameworks we're mentioning here, please let us know about them in the comments.

The tagline "one codebase, every smartphone" pretty much says it all. RhoMobile offers Rhodes, an open source, Ruby-based framework that allows for development of native apps for a wide range of smartphone devices and operating systems. OSes covered include iPhone, Android, Windows Mobile, RIM and Symbian.

The framework lets you write your code once and use it to quickly build apps for every major smartphone. Native apps are said to take full advantage of available hardware, including GPS and camera, as well as location data.

In addition to Rhodes, currently in its 2.0 iteration, RhoMobile offers RhoHub, a hosted development environment, and RhoSync, a standalone server that keeps app data current on users’ mobile devices.

When we polled Twitter followers for recommended cross-platform tools, Appcelerator stood out as a fan favorite.

Another FOSS offering, Appcelerator's Titanium Development Platform allows for the development of native mobile, tablet and desktop applications through typical web dev languages such as JavaScript, PHP, Python, Ruby and HTML. Titanium also gives its users access to more than 300 social and other APIs and location information.

Appcelerator's offerings also include customizable metrics for actions and events. App data can be stored in the cloud or on the device, and apps can take full advantage of hardware, particularly camera and video camera capability.

PhoneGap, the recipient of the winning pitch at Web 2.0 Expo San Francisco's 2009 Launch Pad event, is a FOSS framework that helps you develop apps for iPhone, iTouch, iPad, Android, Palm, Symbian and BlackBerry devices using web development languages such as JavaScript and HTML. It also allows for access to hardware features including GPS/location data, accelerometer, camera, sound and more.

The company offers a cross-platform simulator (an Adobe AIR app), as well as online training sessions to help you access native APIs and build functioning mobile apps on the PhoneGap platform.

MoSync is another FOSS cross-platform mobile application development SDK based on common programming standards. The SDK includes tightly integrated compilers, runtimes, libraries, device profiles, tools and utilities. MoSync features an Eclipse-based IDE for C/C++ programming. Support for JavaScript, Ruby, PHP, Python and other languages is planned.

The framework supports a large number of OSes, including Android, Symbian, Windows Mobile and even Moblin, a mobile Linux distro. Currently, support for iPhone is present in the nightly builds and will be integrated in early Q3 with the release of MoSync 2.4. BlackBerry support is coming later this year, as well.

If you're not a mobile developer and you've made it this far, first of all, bless your heart. Second, you might be able to enjoy the same cross-platform publishing benefits as your coding buddies with this tool. We can almost guarantee your efforts won't be nearly as polished, bug-free, customized or functional as something you could create with one of the five platforms above, but Whoop just might be worth a try.

The Whoop Creative Studio is a WYSIWYG web editor that allows you to drag and drop mobile app elements to your heart's content. Once you're done, you can export your app in formats for several devices and operating systems, including iPhone, Android, RIM, Windows Mobile and other OSes.

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